Perky-Pet 389 Copper Sip and Seed Wild Bird Feeder Unique double silo design - each silo of the feeder is made of glass and antiqued copper finish Feature a patent-pending collar that twists to feature a seed opening or a water opening Serve seed and water, or when winter approaches and water will freeze, to fill both silos with seed 3 ways to use: seed & water, seed only, water only Includes decorative hanger